上海虹桥车站人行走廊人致振动分析

简方梁;吴定俊;李奇

振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 136-140.

PDF(1281 KB)
PDF(1281 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 136-140.
论文

上海虹桥车站人行走廊人致振动分析

  • 简方梁1;吴定俊1;李奇1
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Human-induced vibration analysis of pedestrian suspension corridor in Shanghai Hongqiao station

  • Jian Fangliang1; Wu Dingjun1; Li Qi1
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摘要

采用模态综合与模态叠加理论、应用通用有限元软件与自编程序相结合的方法对上海虹桥站人行走廊的人致振动问题进行分析。考虑BS5400荷载、有序排列人群荷载和随机人群荷载三种荷载模式下的结构响应,指出在步频与结构频率相差较远时,可以采用BS5400荷载模式计算人致振动响应,而当人群荷载频率与结构频率相近时,可根据人群荷载同步调概率的高低选用有序人群荷载模型或随机人群荷载模型。并指出在人行荷载的各个参数中,步频对结构的加速度响应影响最大,其次是动载因子与人群荷载的同步调概率,最后才是人群荷载的集度;最后采用ISO10137标准对人行走廊的振动舒适性进行评价,结果显示接近结构基频的“步行”及“跑动”工况下,其振动舒适性较差。

Abstract

Based on the theories of mode synthesis and mode superposition, human-induced vibration of pedestrian suspension corridor in Shanghai Hongqiao railway station was analyzed using general finite element software combined with self-compiling program. Three different load models were developed to investigate the dynamical effects induced by people in the corridor. Model one is a single person load model given by BS5400, model two is regular crowd loads, and model three considers random crowd loads. The results show that the method given by BS5400 is suitable for estimation of structure response, when the step frequency of walking is far away from the fundamental frequency of the structure. Otherwise the regular crowd loads or the random crowd loads model should be adopted according to the probability of synchronization of crowds. Moreover, it indicates that among all the factors of human force affecting the acceleration response of the corridor, the step frequency is most significant, next comes the dynamic load factor (DLF) and the probability of synchronization of pedestrian , and final is the density of crowd. The comfort evaluation of the pedestrian corridor was conducted using ISO10137’s method, the results show that its vibration serviceability is not so good in"running case" and in “walking case” with step frequency close to the fundamental frequency of the structure.

关键词

人致振动 / 虹桥站 / 模态综合 / 模态叠加 / 舒适度评价

Key words

human-induced vibration / Hongqiao station / mode synthesis / mode superposition / comfort evaluation

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简方梁;吴定俊;李奇. 上海虹桥车站人行走廊人致振动分析[J]. 振动与冲击, 2010, 29(8): 136-140
Jian Fangliang;Wu Dingjun;Li Qi. Human-induced vibration analysis of pedestrian suspension corridor in Shanghai Hongqiao station [J]. Journal of Vibration and Shock, 2010, 29(8): 136-140

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